Vibration Analysis and Control of an Active Power-Train Mount System

Abstract:

In order to improve the property of automotive power-train vibration isolation, reduce the vibration that is transmitted by the power-train to the vehicle chassis, we adopt an active control mount (ACM) which consists of elastic rubber and piezoelectric stack actuator in the system. A hydraulic mechanism is used in the ACM to achieve higher displacements. Through the analysis of the property of the rubber and piezoelectric stack actuator, a mechanical model of the active vibration isolation system with the active mounts is established. An optimal control algorithm is presented for engine vibration isolation system, the controller is designed according to linear quadratic regulator (LQR) theory, the linear quadratic performance index is composed of the vertical acceleration, pitching angular acceleration, and rolling angular acceleration of the chassis and the control signals. Simulation results show that active control system of ACM, effect in reducing body vibration than the passive system is obvious.

• Periodical: Applied Mechanics and Materials (Volumes 341-342)
• Pages: 966-970
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.341-342.966
• Online since: July 2013
• Authors: Guo Chun Sun, Hui Guo, Li Xin Xu
• Keywords: Active Mount, Optimal Control, Piezo-Stack Actuator, Vibration Isolation of Engine

References

[1] Y. Hagino, Y. Furuishi, Y. et al., Active control for body vibration of F.W.D. car, SAE paper # 860552.

[2] M. Muller, U. Weltin et al., The effect of engine mounts on the noise and vibration behavior of vehicles, SAE paper # 940607.

DOI: 10.4271/940607

[3] D.A. Hodgson, Frequency-shaped control of active isolators, AHS-RAES Technical Specialist Meeting on Rotorcraft Acoustics and Rotor Fluid Dynamics, Philadelphia, 15-17 October 1991, pp.1-18.

[4] Toshiyuki Shibayama, Kimio Ito, Toshiyuki Gami et al. Active Engine Mount for a Large Amplitude of Idling Vibration, SAE paper 951298, pp.2232-2240.

DOI: 10.4271/951298

[5] Takao Ushijima, Syoichi Kumakawa, Active Engine Mount with Piezo-Actuator for vibration Control, SAE paper 930201, pp.218-225.

DOI: 10.4271/930201

[6] Yoshiharu Nakaji, Shigeki Satoh et al., Development of an Active Control Engine Mount System, Vehicle System Dynamics. 32(1999), pp.185-198.

DOI: 10.1076/vesd.32.2.185.2084

[7] Nader Jalili, John Wager et al., Piezoelectric driven ratchet actuator mechanism with application to automotive engine valves, , Mechatronics 13 (2003), pp.933-956.

DOI: 10.1016/s0957-4158(03)00009-6

[8] Nakaji, Y., Satoh, S., Kimura, T., Harrabe, Development of an active control engine mount system. Veh. System Dynamics, 1999, 32, 185–198.

DOI: 10.1076/vesd.32.2.185.2084

[9] R. Krtolica and D. Hrovat, Optimal active suspension control based on a half-car model, in Proc. 29th Conf. Decision Contr., 1990, p.2238–2243.

DOI: 10.1109/cdc.1990.204023